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A project log for PCB Motor

A smaller and cheaper open source brushless motor

carl-bugejaCarl Bugeja 10/20/2018 at 17:520 Comments

This video shows how i designed my PCB Motor's ESC and what where the challenges involved in getting my speed controller to work.



This is its schematics:


It has a PIC16F1503 as the main controller and a triple half bridge driver STSPIN230, to control the three phases of the motor. These are both powered from the same supply, to avoid having an extra power wire or on-board regulator, reducing the cost even further. I filtered the digital circuitry supply from an LC filter to attenuate any noise the motor can generate. It can operate from a 5V to 2.6V supply and draws around 220mA in total.

As i explained in my previous project logs, the back emf generated from my pcb motor was too weak to implemented a sensorless speed controller. So i decided to use a hall sensor to provide feedback to the microcontroller and then implemented a speed closed loop speed controller. 

The open source gerber files and schematics for this PCB are available for download. 

In the beginning of November I will be giving a demo of this project at the Hackaday Superconference so see you there! 

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